Aftermarket wheels deserve hardware that matches their quality. Rough Country's closed-end bulge acorn lug nuts give your 2003-2022 F-250 or F-350 Super Duty a secure, corrosion-resistant wheel fastener in a blacked-out finish that complements lifted and custom builds alike. Cold-forged from carbon steel, each nut exceeds OEM specifications for strength and hardness before it ever leaves the factory.
Bulge acorn seat for a superior grip. The bulge acorn profile delivers over 6% more seating surface area than a standard acorn lug nut, spreading clamping force more evenly across the wheel seat. That added contact area reduces the risk of wheel movement and keeps torque values stable over time.
Cold-forged construction for lasting durability. Cold forging aligns the grain structure of the carbon steel, producing a nut that resists deformation under high clamping loads. The black finish adds a layer of corrosion resistance so the hardware holds up through road salt, mud, and repeated tire rotations without pitting or fading.
Closed-end design protects the stud. The closed tip caps the threaded stud, blocking moisture and debris from entering and causing rust at the stud tip. That protection matters on trucks that see off-road use or harsh weather year-round.
Product Benefits
- Bulge Acorn Seat: Over 6% more seating surface area than a standard acorn lug nut for even clamping force distribution.
- Cold-Forged Carbon Steel: Enhanced grain structure delivers strength and hardness that exceeds OEM fastener standards.
- Closed-End Design: Caps the stud tip to prevent moisture intrusion and corrosion at the thread end.
- Black Finish: Corrosion-resistant coating suited for off-road and all-weather use.
- Includes Socket Key: Dedicated installation and removal key included in the 32-piece set.
- M14 x 1.5 Thread Pitch: Direct fit for F-250 and F-350 Super Duty wheel studs.
- 32-Piece Set: Enough hardware to cover all four corners of a dually or standard configuration.
Note: Fits 2003-2022 F-250/F-350 Super Duty. Thread size is M14 x 1.5. Verify seat type compatibility with your aftermarket wheels before installation.
About Rough Country: Rough Country produces suspension lift kits, wheels, accessories, and hardware engineered for trucks and SUVs built to handle demanding terrain. The brand focuses on bolt-on fitment and value-driven construction across a wide range of Ford, GM, Ram, and Jeep platforms.
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Product Specifications & Vehicle Fitment
Review the product details and confirm compatibility with your vehicle before ordering.
| Specification | Details |
|---|---|
| Vehicle Trim | FX4, King Ranch, Lariat, Limited, Platinum, XL, XLT |
| Vehicle Fitment | 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 |
